Cleanup remaining class/struct fwd declarations

headless/public/util/testing/generic_url_request_mocks.h

Index: headless/public/util/testing/generic_url_request_mocks.h
diff --git a/headless/public/util/testing/generic_url_request_mocks.h b/headless/public/util/testing/generic_url_request_mocks.h
index 7dc683fce64b6a3edfb3a784ee99d2f34b99d197..fb8f0bef95437f4a13d40977ce8257b5b855d1ed 100644
--- a/headless/public/util/testing/generic_url_request_mocks.h
+++ b/headless/public/util/testing/generic_url_request_mocks.h
@@ -16,14 +16,6 @@
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_job_factory.h"
 
-namespace net {
-class URLRequestJob;
-}  // namespace net
-
-namespace htmlrender_webkit_headless_proto {
-class Resource;
-}  // htmlrender_webkit_headless_proto net
-
 namespace headless {
 
 class MockGenericURLRequestJobDelegate : public GenericURLRequestJob::Delegate {